Merge pull request #1496 from LudwigOrtmann/osx-fixup

native: reenable compilation on osx

cpu/native/net/tap.c

@@ -149,7 +149,7 @@ void _native_handle_tap_input(void)
 }
 
 #ifdef __MACH__
-void sigio_child()
+void sigio_child(void)
 {
     pid_t parent = _native_pid;
 

sys/posix/include/unistd.h

@@ -52,9 +52,13 @@
 int close(int fildes);
 
 #ifndef __USECONDS_T_TYPE
+#ifndef __MACH__
 typedef unsigned long __USECONDS_T_TYPE;
-#endif
 typedef __USECONDS_T_TYPE __useconds_t;
+#else
+typedef __darwin_useconds_t __useconds_t;
+#endif
+#endif
 typedef __useconds_t useconds_t;
 
 /**